## ELF Header
7F 45 4C 46        ## e_ident[EI_MAG0-3] ELF's magic number
02                 ## e_ident[EI_CLASS] Indicating 64 bit
01                 ## e_ident[EI_DATA] Indicating little endianness
01                 ## e_ident[EI_VERSION] Indicating original elf
00                 ## e_ident[EI_OSABI] Set at 0 because none cares
00                 ## e_ident[EI_ABIVERSION] See above
00 00 00 00 00 00 00 ## e_ident[EI_PAD]
02 00              ## e_type Indicating Executable
3E 00              ## e_machine Indicating AMD64
01 00 00 00        ## e_version Indicating original elf
78 00 60 00 00 00 00 00 ## e_entry Address of the entry point
40 00 00 00 00 00 00 00 ## e_phoff Address of program header table
00 00 00 00 00 00 00 00 ## e_shoff Address of section header table
00 00 00 00        ## e_flags
40 00              ## e_ehsize Indicating our 64 Byte header
38 00              ## e_phentsize size of a program header table
01 00              ## e_phnum number of entries in program table
00 00              ## e_shentsize size of a section header table
00 00              ## e_shnum number of entries in section table
00 00              ## e_shstrndx index of the section names

## Program Header table
01 00 00 00             ## p_type
06 00 00 00             ## Flags
00 00 00 00 00 00 00 00 ## p_offset
00 00 60 00 00 00 00 00 ## p_vaddr
00 00 60 00 00 00 00 00 ## Undefined
08 10 00 00 00 00 00 00 ## p_filesz
08 10 00 00 00 00 00 00 ## p_memsz
00 00 20 00 00 00 00 00 ## Required alignment

:_start
e8 *getchar             # call   600096 <getchar>
48 83 f8 ff             # cmp    rax,0xffffffffffffffff
74 ._start.done         # je     60008a <_start.done>
e8 *putchar             # call   6000d0 <putchar>
eb ._start              # jmp    600078 <_start>
:_start.done
48 89 c7                # mov    rdi,rax
48 c7 c0 3c 00 00 00    # mov    rax,0x3c
0f 05                   # syscall

:getchar
48 c7 c0 00 00 00 00    # mov    rax,0x0
48 c7 c7 00 00 00 00    # mov    rdi,0x0
48 8d 35 *buf           # lea    rsi,[rip+0x4a]        # 6000f5 <buf>
48 c7 c2 01 00 00 00    # mov    rdx,0x1
0f 05                   # syscall
48 83 f8 01             # cmp    rax,0x1
75 .getchar.getchar_fail # jne    6000c8 <getchar.getchar_fail>
48 c7 c0 00 00 00 00    # mov    rax,0x0
8a 05 *buf              # mov    al,BYTE PTR [rip+0x2e]        # 6000f5 <buf>
c3                      # ret
:getchar.getchar_fail
48 c7 c0 ff ff ff ff    # mov    rax,0xffffffffffffffff
c3                      # ret

:putchar
88 05 *buf              # mov    BYTE PTR [rip+0x1f],al        # 6000f5 <buf>
48 c7 c0 01 00 00 00    # mov    rax,0x1
48 c7 c7 01 00 00 00    # mov    rdi,0x1
48 8d 35 *buf           # lea    rsi,[rip+0xa]        # 6000f5 <buf>
48 c7 c2 01 00 00 00    # mov    rdx,0x1
0f 05                   # syscall
c3                      # ret

:buf
00 00 00 00 00 00 00 00
